Basic Examination of the FM Ultrasonic Flowmeter for Gas

Tomohiro Saitou; Shigeru Tanisawa; Haruo Hirose

doi:10.11499/sicep.2002.0.381.0

SICE Annual Conference 2002

DOI https://doi.org/10.11499/sicep.2002.0.381.0

Conference information

Host: The Society of Instrument and Control Engineers

Co-host: IEEE/Industiral Electronic Society, IEEE/Robotics and Automation Society, IEEE/Control System Society

Basic Examination of the FM Ultrasonic Flowmeter for Gas

Tomohiro Saitou, Shigeru Tanisawa, Haruo Hirose

Author information

Keywords: Gas, Ultrasonic Flowmeter, Frequency Modulation

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 381

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Abstract

The construction of an ultrasonic gas flowmeter is difficult because the attenuation of ultrasonic waves and the effects of acoustic noises are considerably higher for a gas than for a liquid. The sound field of the proposed meter is stabilized by FM ultrasonic wave; however, the receiver eliminates the FM components. Therefore, the flow rate can be measured using a single frequeney signal. The flowmeter investigated in the present study yields near satisfactory performance.

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